Cart 0

Sentry Series - 60' x 128'

Call 1-800-557-4689 to Order

Our customer service team will help place your order with your nearest dealer. Dealership and direct sale pricing may vary. If a dealer is not in your area, please ask us for a freight quote to your location.

Customer Service Hours: Monday - Friday, 8 am to 5 pm CST

7,680 Feet of Building Storage

60' wide x 128' long Pro•Tec Sentry Building Series features 7,680 square feet with superior ventilation and unmatched natural lighting. 30 psf snow load rating.

See More Pictures!

  • Provide outstanding height, width and sidewall clearance for optimum capacity and accessibility.
  • Engineered for stability & strength.
  • Offer superior ventilation.
  • Unmatched natural lighting.
  • Certifiable and insurable.

Building Structure:
Total height from ground to the peak of this basic building package is 28'.

Professionally engineered, the Sentry Building Series is classified as partially enclosed and is engineered for wind speeds up to 90 mph. Custom options available for higher wind speeds. Both balanced and unbalanced snow is applied to the model as service load cases.


Covers are not used as a structural part of the building. They do not absorb heat, so the temperature inside the building is cooler in the summer and warmer in the winter. Covers are UV stabilized & feature a weight of 12 oz. per square yard, a coating of 4 mil on each side and a thickness of 20 mil.

Note: Mounting options, such as wood, steel & cement blocks are sold separately. Pricing does not include freight and labor to erect building. Pictures may show optional add-on features. Pictures may not be an exact representation of basic package.


Basic Package Includes:

  • Sentry Rafters with 16’ Spacing with 3 Year Warranty
  • Standard Woven Polyethylene White Cover
  • 8’ Steel Legs and Hardware

Custom Order Add-Ons:

  • Custom Snow Load & Rafter Spacing
  • Pre-Configured End Walls
  • Cover Featuring Color
  • Vents and Awnings
  • Curtain Sides

Note: Please contact our building specialists at 1-800-557-4689 for custom order buildings.

Pro•Tec buildings are easily insurable due to the high-quality engineering and construction put into each and every one. Our registered professionals design these buildings with you in mind, allowing for optimum function and ease of use.

Sentry Series building frames feature a 15 year warranty!

Cover materials are covered for a 15 year, pro-rated warranty.

Accessories: 3 year pro-rated warranties on fabricated tarp materials for laced end panels, roll up sides, curtains, doors, track doors, quarter panels and half moon end panels.

To qualify for warranty, the building must be erected per the Owner’s Manual.

We try our best to ship orders in the timeliest manner possible. Each product may have a different level of manufacturing demand and timeframe for shipment.

Shipping Rates

We offer calculated shipping rates during the checkout process. USPS, UPS & FedEx services are available if the product ordered qualifies for those options.

Order Processing

Business Days: Monday-Thursday.
Holidays, Fridays, Saturdays and Sundays are not included in processing days.

If you have any questions or concerns about your order's status, please email us at to discuss.

International Orders

Customers are responsible for any brokerage fees incurred on shipping. Sioux Steel Company cannot calculate these fees.


Products on this website do not qualify for returns. We understand this may cause you concern....

We are here to help!

Our customer service team is available Monday-Friday, 8am to 5pm CST to discuss the parts in question PRIOR to placing your order.

Call us toll free at 1-800-557-4689 to talk and confirm your parts needed.

Sioux Steel Facebook Page  Sioux Steel YouTube Videos  Sioux Steel Twitter Feed   Connect with Sioux Steel on LinkedIn  Follow Sioux Steel on Instagram  Sioux Steel Pinterest Page

Dealer Locator
We distribute products through local dealerships in your area. Prices and product availability may vary between dealerships.

Verdant Garden Beds:
Galvanized steel raised garden beds can be found on Amazon.

Verdant Garden Beds

Ask a Question

NOTE: All product specifications are subject to change or improvement without notice. We reserve the right to change product pricing at any time without further notice. Pricing may differ at the time of purchase.

Contact Sioux Steel by emailing or by calling our customer service specialists at 1-800-557-4689 for additional information.

SIOUX STEEL COMPANY FOUNDATION: 2% of the total sales dollars from this website are donated to the Leukemia and Lymphoma Society. Beating cancer is in our blood.

We Also Recommend


Ask a Question

Welcome to the Loyalty Points Demo Store :-)

Sign up and receive 5000 pts to test out in our Store.

Earning and redeeming Reward Points

Earns you
Redeems to

Ways you can earn

  • Product Purchase
  • Refer a friend
  • Share on social media

Learn more about our program